SEARCH Articles Figures Tables Asymmetric Cycloaddition Catalyzed by Cinchona-Based Phase-Transfer Catalysts Aziridination of Enones Using Cinchona-Based Chiral Phase-Transfer Catalyst Catalyst phase Catalysts transfer Cinchona Cinchona catalyst Cinchona-Derived Chiral Phase-Transfer Catalysts for Other Asymmetric Synthesis Cinchona-Derived Chiral Poly(Phase-Transfer Catalysts) for Asymmetric Synthesis Cinchona-based phase-transfer catalysts Phase transfer catalysis cinchona-based catalysts Phase-transfer catalysis conditions cinchona alkaloid-derived catalyst